"Depending on the season it can get flooded quite quickly — in a matter of hours you can be cut off.

"Or you'll have wild animals and stuff that [make] you need to swerve, and when you start swerving to miss stuff on gravel, that's when people start losing control."

He said people often underestimate outback roads, particularly the routes that are unsealed.

"People get comfortable on it, their speed creeps up, and all of a sudden they get in trouble at a high speed or a higher speed than they should be doing."

More recently, the Tanami claimed another life — that of a man in his 40s who was travelling near the NT border on January 25.

Balgo police officer-in-charge Senior Sergeant Don Cooper said major crash detectives were still investigating but it looked like very bad luck — a blown left rear tyre apparently caused the vehicle to roll.

Call for limit to suitable vehicles

Ms Challis hopes raising awareness about the road will prevent more accidents.

Although there is a sign at the start of the road advising careful driving, there is nothing stating that campervans or two-wheel drives are not suitable for the journey.

"If there had been a sign at the end of the road saying it is illegal for two-wheel drives to be on here, and he wasn't allowed to do that, he wouldn't have gone down that road," Ms Challis said.

"One, they shouldn't be allowed to be on that road and two, I think Wicked Campervans need a much higher [age] limit — even 21 is too young.

"You can't hire a vehicle in England unless you're 25.

"Young kids should not be allowed to go down that road and certainly not in those type of vehicles. It should be stopped."